Ten people are being treated for possible carbon monoxide poisoning after a grill was being used inside a Oak Cliff church. Dallas Fire-Rescue says paramedics were called to the Calvary Philadelphia Missionary Baptist Church for reports of an unconscious person. When they arrived the noticed a propane tank grill being used inside with the doors to the building closed. Ten people ranging in age from seven to 58 were taken to hospitals complaining of symptoms like dizziness, headaches and nausea.